When you’re looking for aftermarket wheels, you’ve probably heard of forged wheels and cast wheels. Most high-end wheels use a forged design while cheaper wheels use a cast design. Unfortunately, many people don’t understand the differences between the two major manufacturing processes. So, what are forged wheels?
What Are Forged Wheels?
This article explains how forged wheels are made and differentiates them from other types of wheels.
Machine Forging
There are two main methods for making forged wheels: machine forging and mold-form forging. Most forged wheels in the market use machine forging. The process involves taking a chunk of billet aluminum and subjecting it to tons of pressure and high temperatures creating a compressed structure which is stronger than the original piece of billet. The large piece of forged aluminum is then cut into the desired shape using a machine.
Mold-Form Forging
A few companies create forged wheels using the mold-form process. This process is different from machine forging in that the wheel’s shape is created during the forging process. When the shape of the wheel is created during the forging process, the wheel is much stronger because the grain of the metal flows with the wheel’s shape. Once the rough forging has been made, force is applied (upwards of 10,000 tons) to the inner and outer rim using a massive machine to create the desired shape.
Cast wheels are porous. Forged wheels, on the other hand, aren’t thanks to the pressure and heat they undergo. The strength allows for the wheel to be made using less material, resulting in a structurally sound wheel that’s significantly lighter. Forged wheels often use a single block design, but they can also use a three-piece or two-piece design that allows for greater fitment flexibility.
Cast Wheels
Cast wheels are made by pouring aluminum into a shape forming mold where it sits there until it cools down. Once the wheel cools down, they’re trimmed and drilled. Unfortunately, this method of producing wheels allows for weak points to form due to porosity. The cheapest solution to this problem is using larger tolerances, leading to heavier wheels. This wheel manufacturing method is cheap and quick, allowing for the mass production of cheap wheels.
Contrary to popular belief, cast wheels are not all that terrible. Properly built cast wheels will weigh more than forged wheels but the build quality is typically more than enough for light track and street use.
What’s Best for You?
When it comes to wheels, there’s no one-size-fits-all options. It all comes down to how much you’re willing to spend as well as the intentions with your car. Regardless of what kind of wheels you’re looking for, the pros at Element Wheels have the knowledge to help you choose the right wheels for your vehicle.
Bottom Line
So, what are forged wheels? Well, there’s plenty more to learn about forged wheels. For instance, it helps to know about elongation and load ratings. Ultimately, remember that cast wheels are cheap but good enough for street use. Forged wheels, on the other hand, can be expensive and will hold up to anything you throw at them.